1. Norwegian marine geodetic projects
2. Blankenburgh, J. C. and Kl⊘v, K. Positioning and mapping potentialities for ocean mining. Proc. Int. Conf. on Ocean Mining. Sandefjord.
3. Research in hydrographic technology at the Norwegian continental shelf institute (IKU)
4. Endresen, T. 1977.Koordinering av radiostedfesting. (Coordination of radiopositioning). Norw, Official Report 1977 43